Bears at Play, Key for Survival
Hungry wild polar bear prefers playing with a chained sled dog to eating it. It sounds like a paradox. How could play — defined as “apparently purposeless activity that’s fun to do and pleasurable� — be vital for grim survival in such an often random...

Watch: CES in 60 Seconds: Sony Xperia LTE Phone
A first look at Sony's upcoming 4g mobile device.

Watch: Quadrantid Meteors Shower the Sky
Stargazers see debris from extinct comet over the Northern Hemisphere.

Watch: Mysteries of the Northern Lights
David Muir gives a little insight into what creates those amazing auroras.

Verizon to set up streaming service with Redbox (AP)

AP - Phone company Verizon Communications Inc. will challenge Netflix and start a video streaming service this year with Redbox and its DVD rental kiosks.

Facebook's Success: Real Names Only
Facebook, which filed for an IPO this week, says it has been a success largely because it requires people to use their real names online and thus be more civil to each other. No anonymous flaming allowed. Can it last?